Natrometer
测钠计, 钠量计
🗣️ 情景例句
Here's $ 1000 for the trip. Use some of it for stamps.
这里是1000美元，给你当旅费。要把一些用来买邮票啊！
John would like to touch some of the sculpture in the art gallery.
约翰想触摸几件美术馆的雕刻。
There is a stereo in the room.
客厅里有台立体声音响。